The number 6 has a special significance. It represents the Law and Order and also associated with a Karmic Law of cause and effect. Number 6 is a perfect number, symmetrical in all parts, the number of the Soul.
Plums are ready they are not hard as a rock, soft just a little when pressed. I wouldn't use windfall, they are too ripe. If your making jam, it is best to use some underripe with the ripe ones. Last season I added small diced candied ginger to the plum jam. Really turned out nice.
1 When pruning the Natal Plum, prune after flowering, when in growth and when several leaves have developed. 2  When pruning, be sure to prune back to 1-2 leaves, leaving at least 4-5 leaves on the branch. 3  Fertilize the Natal Plum Bonsai during spring when there is new growth. 4  Natal Plums are tender to the cold and frost.